Delaware County, IA

254 public highway bridges

Delaware County Bridge Snapshot

Delaware County, Iowa contains 254 public highway bridges in the FHWA National Bridge Inventory. Roughly 38.6% are rated “Good,” 51.6% “Fair,” 6.7% “Poor,” and 6.7% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in IA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

254
Total Bridges
38.6%
Good
6.7%
Poor
6.7%
Structurally Deficient

Condition Distribution

Good
38.6% (98)
Fair
51.6% (131)
Poor
6.7% (17)
SD
6.7% (17)

All Bridges (254)

IA 38

Good

Over: PLUM CREEK

1.9 mi. N of SR D47, Delaware, IA

Built 1992 Load: 27.8 t ADT: 1,030

LOCAL 125 AVE

Good

Over: SMALL STREAM

087060904, Delaware, IA

Built 1990 Load: 28.8 t ADT: 29

FM 310TH ST

Good

Over: BUFFALO CREEK

087061901, Delaware, IA

Built 1985 Load: 29.2 t ADT: 49

LOCAL 221 ST

Good

Over: SPRING BRANCH

088050203, Delaware, IA

Built 1982 Load: 29.9 t ADT: 137

260TH AVE

Good

Over: PLUM CREEK

089041402, Delaware, IA

Built 1981 Load: 29.9 t ADT: 20

LOCAL 145 ST

Good

Over: SMALL STREAM

090032603, Delaware, IA

Built 1990 Load: 30.5 t ADT: 88

215TH AVE

Good

Over: SMALL STREAM

087052404, Delaware, IA

Built 2004 Load: 31.7 t ADT: 20

LOC 225 ST

Good

Over: SMALL STREAM

088040306, Delaware, IA

Built 1984 Load: 32.4 t ADT: 39

240TH ST

Good

Over: MAQUOKETA RIVER

00000, Delaware, IA

Built 2011 Load: 32.4 t ADT: 1,080

FM 140TH AVE

Good

Over: SAND CREEK

1.1 Mi. North of CR D34, Delaware, IA

Built 2011 Load: 32.4 t ADT: 49

310TH AVE

Good

Over: STREAM

89 03 10 0065, Delaware, IA

Built 2013 Load: 32.4 t ADT: 49

265TH AVE

Good

Over: PLUM CREEK

1 mile North of 195th St., Delaware, IA

Built 2012 Load: 32.4 t ADT: 15

218TH ST

Good

Over: PLUM CREEK

218th St. SE of Earlville, Delaware, IA

Built 2012 Load: 32.4 t ADT: 118

190TH AVE

Good

Over: HONEY CREEK

89 05 10 04, Delaware, IA

Built 2012 Load: 32.4 t ADT: 39

200TH ST

Good

Over: SMALL STREAM

89 04 30 01, Delaware, IA

Built 2013 Load: 32.4 t ADT: 11

FM GOOSE HILL

Good

Over: SMALL STREAM

087032505, Delaware, IA

Built 2007 Load: 32.7 t ADT: 216

FM 245TH AVE

Good

Over: SMALL STREAM

087043308, Delaware, IA

Built 2008 Load: 32.7 t ADT: 390

FM 110TH AVE

Good

Over: ROBINSON CREEK

087060502, Delaware, IA

Built 2008 Load: 32.7 t ADT: 334

LOC 235TH ST

Good

Over: STREAM

088031103, Delaware, IA

Built 2006 Load: 32.7 t ADT: 20

262ND AVE

Good

Over: SMALL STREAM

088042304, Delaware, IA

Built 2005 Load: 32.7 t ADT: 236

150TH AVE

Good

Over: UNAMED CREEK

000000000, Delaware, IA

Built 2009 Load: 32.7 t ADT: 20

FM 110TH AVE

Good

Over: SMALL STREAM

088062902, Delaware, IA

Built 2006 Load: 32.7 t ADT: 334

180TH ST

Good

Over: HONEY CREEK

089051601, Delaware, IA

Built 2005 Load: 32.7 t ADT: 70

FM 162 AVE

Good

Over: STREAM

089051906, Delaware, IA

Built 2004 Load: 32.7 t ADT: 363

FM 195TH ST

Good

Over: STREAM

089051903, Delaware, IA

Built 2005 Load: 32.7 t ADT: 835

FM 190TH ST

Good

Over: REIGER CREEK

8906249000, Delaware, IA

Built 2009 Load: 32.7 t ADT: 363

X47 300TH AVE

Good

Over: BRANCH OF BEAR CREEK

90 03 33 0019, Delaware, IA

Built 2009 Load: 32.7 t ADT: 470

LOC 310TH AVE

Good

Over: BEAR CREEK

090033402, Delaware, IA

Built 2007 Load: 32.7 t ADT: 207

FM 150 ST

Good

Over: SMALL CREEK

090053101, Delaware, IA

Built 1986 Load: 32.7 t ADT: 589

220TH AVENUE

Good

Over: SMALL STREAM

087040602, Delaware, IA

Built 2003 Load: 32.7 t ADT: 49

240TH ST

Good

Over: STREAM

088061401, Delaware, IA

Built 2021 Load: 32.7 t ADT: 90

300TH AVE

Good

Over: STREAM

088031601, Delaware, IA

Built 2021 Load: 32.7 t ADT: 40

W MARION ST

Good

Over: UNNAMED STREAM

089053105, Delaware, IA

Built 2011 Load: 32.7 t ADT: 2,887

200TH AVE

Good

Over: HONEY CREEK

089050204, Delaware, IA

Built 1983 Load: 33.0 t ADT: 29

LOCAL 265 ST

Good

Over: PLUM CREEK

088032903, Delaware, IA

Built 1979 Load: 33.6 t ADT: 44

WB US 20

Good

Over: OVER ABANDON RR

0.4 mi. W of Jct. IA 38, Delaware, IA

Built 1973 Load: 33.8 t ADT: 4,250

FM 272ND ST

Good

Over: N FORK MAQUOKETA RIVER

088033605, Delaware, IA

Built 1999 Load: 34.0 t ADT: 462

FM 220 AVE

Good

Over: MAQUOKETA RIVER

088043004, Delaware, IA

Built 2008 Load: 34.0 t ADT: 894

267TH ST

Good

Over: TURTLE CREEK

On 267th 1.25 W of X21, Delaware, IA

Built 2014 Load: 34.3 t ADT: 226

FM 150 ST

Good

Over: SMALL STREAM

090063601, Delaware, IA

Built 1986 Load: 34.3 t ADT: 589

WB US 20

Good

Over: OVER CC RR

0.9 MI. E OF JCT. 13, Delaware, IA

Built 1971 Load: 34.3 t ADT: 3,850

LOCAL 180 AVE

Good

Over: HONEY CREEK

089051602, Delaware, IA

Built 1984 Load: 34.5 t ADT: 1,030

LOC SHERWOOD RD

Good

Over: PLUM CREEK

088032004, Delaware, IA

Built 1993 Load: 35.6 t ADT: 49

LOC QUARTER RD

Good

Over: MAQUOKETA RIVER

088043404, Delaware, IA

Built 1996 Load: 35.6 t ADT: 49

LOC 400TH ST

Good

Over: MAQUOKETA RIVER

090060501, Delaware, IA

Built 1986 Load: 36.0 t ADT: 157

FM 220 AVE

Good

Over: LIME CREEK

087041908, Delaware, IA

Built 1989 Load: 36.3 t ADT: 88

LOCAL 280 AVE

Good

Over: SMALL STREAM

088031802, Delaware, IA

Built 1991 Load: 36.3 t ADT: 33

LOCAL FLOYD RD

Good

Over: BEAR CREEK

089032608, Delaware, IA

Built 1987 Load: 36.3 t ADT: 501

FM 110 AVE

Good

Over: SPRING BRANCH

089062002, Delaware, IA

Built 1992 Load: 36.3 t ADT: 206

RAINBOW RD

Good

Over: O'DELL BRANCH

090041006, Delaware, IA

Built 1990 Load: 36.3 t ADT: 59

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial